15 Works

Data from: Fluctuating, warm temperatures decrease the effect of a key floral repressor on flowering time in Arabidopsis thaliana

Liana T. Burghardt, Daniel E. Runcie, Amity M. Wilczek, Martha D. Cooper, Judith L. Roe, Stephen M. Welch & Johanna Schmitt
The genetic basis of growth and development is often studied in constant laboratory environments; however, the environmental conditions that organisms experience in nature are often much more dynamic. We examined how daily temperature fluctuations, average temperature, day length and vernalization influence the flowering time of 59 genotypes of Arabidopsis thaliana with allelic perturbations known to affect flowering time. For a subset of genotypes, we also assessed treatment effects on morphology and growth. We identified 17...

Data from: Ecomorphological determinations in the absence of living analogs: the predatory behavior of the marsupial lion (Thylacoleo carnifex) as revealed by elbow-joint morphology

Borja Figueirido, Alberto Martín-Serra & Christine M. Janis
Thylacoleo carnifex, or the "pouched lion" (Mammalia: Marsupialia: Diprotodontia: Thylacoleonidae) was a carnivorous marsupial that inhabited Australia during the Pleistocene. Although today all authors agree that Thylacoleo had a hypercarnivorous diet, the way in which it killed its prey remains uncertain. Here we use geometric morphometrics to capture the shape of the elbow joint (i.e., the posterior articular surface of the distal humerus) in a wide sample of extant mammals of known behavior to determine...

Data from: The role of ontogeny in physiological tolerance: decreasing hydrostatic pressure tolerance with development in the northern stone crab Lithodes maja

Catriona Munro, James P. Morris, Alastair Brown, Chris Hauton & Sven Thatje
Extant deep-sea invertebrate fauna represent both ancient and recent invasions from shallow-water habitats. Hydrostatic pressure may present a significant physiological challenge to organisms seeking to colonize deeper waters or migrate ontogenetically. Pressure may be a key factor contributing to bottlenecks in the radiation of taxa and potentially drive speciation. Here, we assess shifts in the tolerance of hydrostatic pressure through early ontogeny of the northern stone crab Lithodes maja, which occupies a depth range of...

Data from: Automation and evaluation of the SOWH test with SOWHAT

Samuel H. Church, Joseph F. Ryan & Casey W. Dunn
The Swofford–Olsen–Waddell–Hillis (SOWH) test evaluates statistical support for incongruent phylogenetic topologies. It is commonly applied to determine if the maximum likelihood tree in a phylogenetic analysis is significantly different than an alternative hypothesis. The SOWH test compares the observed difference in log-likelihood between two topologies to a null distribution of differences in log-likelihood generated by parametric resampling. The test is a well-established phylogenetic method for topology testing, but it is sensitive to model misspecification, it...

Data from: Structure and composition of altered riparian forests in an agricultural Amazonian landscape

R. Chelsea Nagy, Stephen Porder, Christopher Neill, Paulo Brando, Raimundo Mota Quintino & Sebastiâo Aviz Do Nascimento
Deforestation and fragmentation influence the microclimate, vegetation structure, and composition of remaining patches of tropical forest. In the southern Amazon, at the frontier of cropland expansion, forests are converted and fragmented in a pattern that leaves standing riparian forests whose dimensions are mandated by the Brazilian National Forest Code. These altered riparian forests share many characteristics of well-studied upland forest fragments, but differ because they remain connected to larger areas of forest downstream, and because...

Data from: Multivariate analysis of electrophysiological diversity of Xenopus visual neurons during development and plasticity

Christopher M. Ciarleglio, Arseny S. Khakhalin, Angelia F. Wang, Alexander C. Constantino, Sarah P. Yip & Carlos D. Aizenman
Biophysical properties of neurons become increasingly diverse over development, but mechanisms underlying and constraining this diversity are not fully understood. Here we investigate electrophysiological characteristics of Xenopus tadpole midbrain neurons across development and during homeostatic plasticity induced by patterned visual stimulation. We show that in development tectal neuron properties not only change on average, but also become increasingly diverse. After sensory stimulation, both electrophysiological diversity and functional differentiation of cells are reduced. At the same...

Data from: Sizing ocean giants: patterns of intraspecific size variation in marine megafauna

Craig R. McClain, Meghan A. Balk, Mark C. Benfield, Trevor A. Branch, Catherine Chen, James Cosgrove, Alistair D. M. Dove, Leo C. Gaskins, Rebecca Helm, Frederick G. Hochberg, Frank B. Lee, Andrea Marshall, Steven E. McMurray, Caroline Schanche, Shane N. Stone, Andrew D. Thaler & Rebecca R. Helm
What are the greatest sizes that the largest marine megafauna obtain? This is a simple question with a difficult and complex answer. Many of the largest-sized species occur in the world’s oceans. For many of these, rarity, remoteness, and quite simply the logistics of measuring these giants has made obtaining accurate size measurements difficult. Inaccurate reports of maximum sizes run rampant through the scientific literature and popular media. Moreover, how intraspecific variation in the body...

Data from: Community assembly of a euryhaline fish microbiome during salinity acclimation

Victor T. Schmidt, Katherine F. Smith, Donald W. Melvin & Linda A. Amaral-Zettler
Microbiomes play a critical role in promoting a range of host functions. Microbiome function, in turn, is dependent on its community composition. Yet, how microbiome taxa are assembled from their regional species pool remains unclear. Many possible drivers have been hypothesized, including deterministic processes of competition, stochastic processes of colonization and migration, and physiological ‘host-effect’ habitat filters. The contribution of each to assembly in nascent or perturbed microbiomes is important for understanding host–microbe interactions and...

Data from: Trait integration and macroevolutionary patterns in the pollination biology of conifers

Andrew B. Leslie, Jeremy Michael Beaulieu, Peter R. Crane, Patrick Knopf & Michael J. Donoghue
Integration influences patterns of trait evolution, but the relationship between these patterns and the degree of trait integration is not well understood. In order to explore this further, we study a specialized pollination mechanism in conifers whose traits are linked through function but not development. This mechanism depends on interactions among three characters: pollen that is buoyant, ovules that face downward at pollination, and the production of a liquid droplet that buoyant grains float through...

Data from: Global effects of soil and climate on leaf photosynthetic traits and rates

Vincent Maire, Ian J. Wright, I. Colin Prentice, Niels H. Batjes, Radika Bhaskar, Peter M. Van Bodegom, Will K. Cornwell, David Ellsworth, Ülo Niinemets, Alejandro Ordoñez, Peter B. Reich & Louis S. Santiago
Aim: The influence of soil properties on photosynthetic traits in higher plants is poorly quantified in comparison with that of climate. We address this situation by quantifying the unique and joint contributions to global leaf-trait variation from soils and climate. Location: Terrestrial ecosystems world-wide. Methods: Using a trait dataset comprising 1509 species from 288 sites, with climate and soil data derived from global datasets, we quantified the effects of 20 soil and 26 climate variables...

Data from: Falling with style: bats perform complex aerial rotations by adjusting wing inertia

Attila J. Bergou, Sharon M. Swartz, Hamid Vejdani, Daniel K. Riskin, Lauren Reimnitz, Gabriel Taubin & Kenneth S. Breuer
The remarkable maneuverability of flying animals results from precise movements of their highly specialized wings. Bats have evolved an impressive capacity to control their flight, in large part due to their ability to modulate wing shape, area, and angle of attack through many independently controlled joints. Bat wings, however, also contain many bones and relatively large muscles, and thus the ratio of bats’ wing mass to their body mass is larger than it is for...

Data from: Phylogenomic analyses of Echinodermata support the sister groups of Asterozoa and Echinozoa

Adrian Reich, Casey Dunn, Koji Akasaka & Gary Wessel
Echinoderms (sea urchins, sea stars, brittle stars, sea lilies and sea cucumbers) are a group of diverse organisms, second in number within deuterostome species to only the chordates. Echinoderms serve as excellent model systems for developmental biology due to their diverse developmental mechanisms, tractable laboratory use, and close phylogenetic distance to chordates. In addition, echinoderms are very well represented in the fossil record, including some larval features, making echinoderms a valuable system for studying evolutionary...

Data from: Environmental gradients and the evolution of successional habitat specialization: a test case with 14 Neotropical forest sites

Susan G. Letcher, Jesse R. Lasky, Robin L. Chazdon, Natalia Norden, S. Joseph Wright, Jorge A. Meave, Eduardo A. Pérez-García, Rodrigo Muñoz, Eunice Romero-Pérez, Ana Andrade, José Luis Andrade, Patricia Balvanera, Justin M. Becknell, Tony V. Bentos, Radika Bhaskar, Frans Bongers, Vanessa Boukili, Pedro H. S. Brancalion, Ricardo G. César, Deborah A. Clark, David B. Clark, Dylan Craven, Alexander DeFrancesco, Juan M. Dupuy, Bryan Finegan … & G. Bruce Williamson
1. Successional gradients are ubiquitous in nature, yet few studies have systematically examined the evolutionary origins of taxa that specialize at different successional stages. Here we quantify successional habitat specialization in Neotropical forest trees and evaluate its evolutionary lability along a precipitation gradient. Theoretically, successional habitat specialization should be more evolutionarily conserved in wet forests than in dry forests due to more extreme microenvironmental differentiation between early and late successional stages in wet forest. 2....

Data from: Dopamine promotes motor cortex plasticity and motor skill learning via PLC activation

Mengia-Seraina Rioult-Pedotti, Ana Pekanivic, Clement Osei Atiemo, John Marshall, Andreas Rüdiger Luft & Ana Pekanovic
Dopaminergic neurons in the ventral tegmental area, the major midbrain nucleus projecting to the motor cortex, play a key role in motor skill learning and motor cortex synaptic plasticity. Dopamine D1 and D2 receptor antagonists exert parallel effects in the motor system: they impair motor skill learning and reduce long-term potentiation. Traditionally, D1 and D2 receptor modulate adenylyl cyclase activity and cyclic adenosine monophosphate accumulation in opposite directions via different G-proteins and bidirectionally modulate protein...

Data from: Effects of neonatal size on maturity and escape performance in the Trinidadian guppy

Terry R. Dial, David N. Reznick & Elizabeth L. Brainerd
The livebearing Trinidadian guppy (Poecilia reticulata) produces bigger offspring in populations exposed to low predation and produces smaller, more numerous offspring in populations subject to high predation (HP). Like most fishes, guppies respond to predator attacks with a fast-start escape response. From the scaling of teleost fast-start performance, we predict that larger guppy neonates should exhibit faster, more effective escape responses than smaller neonates. Increasing performance with increasing size could be due simply to size,...

Registration Year

  • 2015
    15

Resource Types

  • Dataset
    15

Affiliations

  • Brown University
    15
  • Duke University
    2
  • University of Minnesota
    2
  • Aarhus University
    2
  • Smithsonian Tropical Research Institute
    2
  • Louisiana State University of Alexandria
    2
  • Museo de Historia Natural Noel Kempff Mercado
    1
  • National Oceanography Centre
    1
  • VU University Amsterdam
    1
  • University of Washington
    1